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3-4 Troubleshooting and Diagnostics Service Manual
Swapping modules that might be defective with others known to be good is generally an ideal way to
find the module responsible for the problem. A failure symptom is rarely caused by more than one
module, so you will not usually need to replace more than one to correct a particular failure.
After you replace a module, the notebook will normally be in a confused state and lock up when you
apply power. If this happens, press the reset button: this turns the notebook off, so that you can restart it
in a known state.
Verifying the Repair
Before returning the repaired notebook to the customer, verify the repair by running the following tests:
• e-
Diagtools Basic Diagnostic Test.
Run the basic test of the e-Diagtools diagnostic program
(page 3-17).
–and–
•
Function Tests.
Run tests that check the repaired function, such as those in e-Diagtools
(page 3-17).
–and–
•
Failed Tests.
Run any other tests that failed during troubleshooting.